Upvote:-3
Most accounts do not state any numbers, but commonly report that by far the largest number of deaths was at York, where about 500 are known to have been killed. The places and numbers include the following:
York 500
Norwich 100
Bury St. Edmunds 57
London ?
Stamford ?
Lynn ?
Lincoln ?
If we count 100 at each place where the number is not known, it comes to around 1000 total.
Upvote:6
To be honest, this is a question that can be answered with a quick look at Wikipedia, which appears reasonably well sourced, and probably as reliable as any answer you will receive here.
https://en.wikipedia.org/wiki/History_of_the_Jews_in_England#Persecution_and_expulsion
To summarise Wikipedia ... there were an estimated 3000 Jews in England in 1278. 500 died at York in 1290, 300 died in London in 1279. The source for the London massacre of 1289 (Roger of Howden) does not mention a number, but it seems to have been a major incident in which many houses were burned down in the belief that the king had ordered the massacre.
Here's the page for Vol 3 of Howden's chronicle giving the account of the London massacre:
A translation of the Latin can be found here: http://legacy.fordham.edu/halsall/source/hoveden1189b.asp
So if we estimate 500 dead at York, 300 dead in London in 1278, conservatively 100 at London in 1289, and perhaps another 100 dead in various other events, we could make a rough estimate of perhaps 33% of English Jews killed in the decades before the expulsion in 1290.
Of course your question was "In England, was the Jewish population drastically reduced when these persecutions ended?" The answer is 'yes' because 100% of remaining Jews were removed from England by expulsion in 1290. However if you mean how many were killed during the persecutions, then between 20% and 40% looks like a realistic figure.